Linea baking dish (8x8) with parchment paper. Be sure to leave enough of the parchment over-hang so that you can easily lift the fudge out of the dish once it has completely cooled.
Lightly toast the shredded coconut. Set aside.
Ina double boiler (or large quart pan with a metal bowl sitting on it), over medium heat, combine the sugar, butter and heavy cream, and bring the mixture to a boil (as close as you can get). Reduce the heat to medium-low and cook for7 to 10 minutes, stirring constantly.
Remove the mixture from the heat and stir in the white chocolate chips until they are melted and the mixture is smooth.
Add the pineapple juice, cake mix, and marshmallow crème. Mix until well combined.
Fold in the diced dried pineapple.
Pour the fudge mixture into the prepared baking dish.
Place the cherry halves, cut-side down and evenly spaced, on top of the fudge. Basically line them up so that when you cut the fudge you will have a half slice of cherry on top of every piece.
Place the fudge in the refrigerator for 2 to 3 hours, until it completely cools and is firm.
At that point, lift parchment from the pan, cut into pieces, and enjoy!